In neurons, the message is transmitted across synapses in the form of a chemical messenger called _.
Correct answer: B. Neurotransmitter
- A. Communication
- B. Neurotransmitter
- C. Nerve impulse
- D. Nocireceptor
Explanation
A neurotransmitter is a signaling molecule secreted by a neuron to affect another cell across a synapse. The cell receiving the signal, or target cell, may be another neuron, but could also be a gland or muscle cell. Hence, option B is the correct option.
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About Coordination and Control
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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